Types of Fibre There are two types of fibres classified accord Natural fibres further can be classified in two categories according to its source of generation. → Wool is obtained from the fleece (hair) of fleece sheep or yak. f) Silk fibre is obtained from the stem of a plant. Animal fibres → Wool and silk fibres are obtained from animals. The fibres obtained from animals are generally textile. How is wool obtained from sheep?3. Silk came to various parts of the world from China. These are a type of natural fibres as they are obtained from nature. Fibres. The silk fiber is the only fiber obtained from an insect (secretion) – … b) Spinning is a process of making fibres. Most of this down fibre is plucked or combed out by hand during the molting season. 22 Animal Fibre Mahaboobnagar district. What do you use for making these wicks? Mohair fibre is obtained from the fleece of Angora goat, originally from Anatolia. Wool is the soft, wavy (or curly) hair which covers the body of a sheep. Due to this, woollen fabrics keep us more warm during cold, winter days. Silk fibres come from cocoons of the silk moth. Animal Fibres Fibres obtained from the cocoons spun by the larvae Bombyx mori Linn., belonging to family Bombycidae/Moraceae. (F) Silk fibre is obtained from the stem of a plant. Numerous scientific studies have confirmed their importance in maintaining health and preventing illness. The fleece of this animal is made of wool fibres: the most precious hair is long, between 12 and 25 centimetres, slightly curly and bright like silk. These are called synthetic fibres . You also learnt that wool and silk fibres are obtained from animals. Animal textile fibers commercially used today are generally obtained from the mammals such as Sheep, Goat, Angora Rabbit, Lama, Alpaca, Vicuna, Guanaco, Camel, Yak, Northern American Buffalo, and Musk Ox. Answer: The fibres which are made from chemical substances or which are not obtained from the plant and animal sources are called synthetic fibres. All questions and answers from the NCERT Book of Class 7 Science Chapter 3 are provided here for you for free. Explain the process of making yarn from fibre. Wool, after shearing, it is graded and then scoured with alkaline solution. The second stage began with the use of animal fibres especially wool and silk. Sheep are the principal source of natural animal fibre and there are more than 200 breeds of sheep worldwide. These fibres can not be produced by any type of chemical process. The fibres which are made from chemical substances or which are not obtained from the plant and animal sources are called synthetic fibres. Names of Animal Fibres. 3 Fibre to Fabric I n Class VI you have learnt about some fibres obtained from plants. (g) Polyester is a natural fibre. The annual yield per animal ranges from a few grams to about 0.5 kilogram. These MCQ Questions on Fibre to Fabric Class 7 with answers pave for a quick revision of the Chapter thereby helping you to enhance subject knowledge. Can you name the fibre we get from sheep and goat? Classify the following fibres as natural or synthetic: nylon, wool, cotton, silk, polyester, jute. substances, which are not obtained from plant or animal sources. Iranian cashmere, however, is obtained by shearing. Used for animal feed as well as human nutrition, fibres form part of Tereos’ by-products. Some examples of synthetic fibres are polyester, nylon and acrylic. Animal fibres are the natural fibres that can be sourced to animals. By-products. Wool is obtained from the fleece (hair) of sheep or yak. Answer in Detail1. → Wool is derived from these hairy fibres. Neelima saw cocoons being boiled in water. Some examples of synthetic fibres are polyester, nylon and acrylic. 1. Paheli wanted to buy a gift made of animal fibre obtained without killing the animal. You also learnt that wool and silk fibres are obtained from animals. “Textile fibres directly obtained from nature are called natural fibres”. a) Yarn is made from fibres. Summary Wool fibers are animal fibers, which are obtained from sheep. Cotton Fibres: Cotton fibre is obtained from cotton plants that grow in black soil in a warm climate. 3.3 SOME PLANT FIBRES Cotton Have you ever made wicks for oil lamps? LET US KNOW ABOUT SOME ANIMAL FIBRES: WOOL; Wool is obtained from the fleece (hairy growth) of sheep and other wool yielding animals like Yak, Camel, Kashmiri Goat, Llama, Alpaca, Vicuna, Guanaco, etc.These animals have a thick coat of hair on their bodies to trap a lot of air. Answer: (a) Woollen shawl. Types of Fibres, Fibre to Fabric, Class 6. Fibres are the materials, which are available in the form of thin, continuous and flexible strands spun into yarn and made into fabrics. Animal Fibres - Silk | Home | | Pharmacognosy | Chapter: Pharmacognosy and Phytochemistry : Fibres, Sutures and Surgical Dressings. Rabbit hair, animal fibre obtained from the Angora rabbit and the various species of the common rabbit. (a) Woollen shawl (b) Silk scarf (c) Animal fur cap (d) Leather jacket. These are called synthetic fibres. Question: Explain how jute is obtained from the jute plant. Synthetic fibres are used for making fabrics (or cloth). Animal fibres. Fibre to Fabric NCERT – Question: Sorter’s disease is an occupational hazard. The fibre of the Angora rabbit (so named for the resemblance of its pelt to that of the Angora I work in the reeling centre. Silkworms & silkmoths. All questions and answers from the Living Science 2019 2020 Book of Class 7 Science Chapter 4 are provided here for you for free. Some of our clothes are made from yarn derived from animal fibres . Made of proteins eg wool and silk. These solutions for Animal Fibres are extremely popular among Class 7 students for Science Animal Fibres Solutions come handy for quickly completing your homework and preparing for exams. Explain the life cycle… 2. Silk. She was shocked and uttered ‘Hey … ! Chapter 3 - Fibre to Fabric. Animals that yield wool → Breeds of sheep are found in different pa Wool is a modified form of hair that grows with a waviness. Usually in a very bright silver white, sometimes it may be ash-grey, rosy, brown or black. Silk fibre is obtained from: (a) fleece of sheep (b) cotton ball (c) cocoon (d) shiny jute stalk. certain fibres are not made from natural sources. What are you doing? Question 9. These fibres are generally produced from the animal’s fur, skin, hair, or even secretion in the case of the silkworm. That’s right, we get wool from their hair. Example: Wool and Silk. Wool can also be obtained from the hair of rabbits and camels. Wool - Obtained from fleece/ hair of some animals sheep/ goat/ rabbit/ yak/ camel - Soft to touch - Traps air in the spaces present, air is a poor conductor of heat and so keeps us warm - easily dyed in different colors. We are boiling cocoons to get silk fibre. Natural Fibres can be categorised in two different types: Plant Fibres. Natural fibers – The fibers which are produce from natural sources called natural fibres (cotton and jute from plant, silk and wool from animal.) Alpaca to Yak . Answer: The jute plant is normally harvested at flowering stage. The third stage in the history of clothing began in the late 19th century with the development of man-made or synthetic fibres like rayon, nylon and polyester. Fibres are long chains of carbohydrates that are neither digested nor absorbed in the human small intestine. (D) True (E) True (F) False : Silk fibre is obtained from silkworm (animal). Natural silk is an animal fibre. Fibres are also made from chemical substances, which are not obtained from plant or animal sources. SOLUTION: (A) True (B) False : Spinning is the process of making yarn from fibres. 2. Which of the following would be the right gift for her to buy? Wool is the most commonly used animal fibre. Synthetic fibres- such fibres are Obtained from Synthetic chemical sources (nylon and rayon they are prepared from chemical process) TYPE OF FIBRES. Obtained from various parts of the plant. Because of the waviness of wool, the woollen fabrics have a greater bulk (than cotton fabrics) and hence trap more air. For example, polyester, nylon, and acrylic, etc. These are the only natural fibers, which have considerable low strength. Sheep. It is the secretion of an insect called the silk worm. Differentiate between plant and animal fibres.2. Fibres obtained from the cocoons spun by the larvae Bombyx mori Linn., belonging to family Bombycidae/Moraceae. NCERT Solution for Class 6 Science. d) The process of removing seed from cotton is called ginning. These solutions for Animal Fibres Wool And Silk are extremely popular among Class 7 students for Science Animal Fibres Wool And Silk Solutions come handy for quickly completing your homework and preparing for exams. c) Jute is the outer covering of coconut. Wool is obtained from the fleece (hair) of sheep or yak. Then it is subjected to next process depending upon whether it is meant for worsted purpose or woolen products. The fibers extracted from these animals greatly differ in terms of biological, chemical and physical features. Camel fibre. Rabbits have coats consisting of both long, protective guard hairs and a fine insulating undercoat. g) Polyester is a natural fibre. This cotton wool is also used for filling mattresses, quilts or pillows. The fibres are of two types:1 Natural fibres 2 Synthetic fibres. Silk fibres come from cocoons of the silk moth. Biological Source . Read more about these on the sheep breeds page. Silk fibres come from cocoons of the silk moth. Explain. Answer. A - Animal fibres: The natural fibres obtained from animals or insects are known as animal fibres. The downy undercoat is made up of the fine, soft fibre commonly called cashmere, which ranges from 2.5 to 9 cm (1 to 3.5 inches) long. The fibres which are obtained from natural sources like plants and animals are called natural fibres.The fibres which are prepared from chemical substances in industry are called synthetic fibres. Animal fibres: Fibres obtained from animal sources are called animal fibres. These fibres are not obtained from plant or animal sources. 3. Artificial silk is obtained from wood pulp and it is made up of modified plant material ‘cellulose’. Find an answer to your question A. Once these animal fibres are extracted they are generally knitted or woven for forming beautiful animal fabrics. From which parts of the plant cotton and jute are obtained? Wool → Wool comes from sheep, goat, yak and some other animals who are having hair on their body. Name two items that are made from coconut fibre. Caterpillar of silkworm spins fiber which is mainly made up of two types of protein (sirisine and fibroin) and is very strong. These fabrics are then used for making our dresses and for other domestic purposes like curtains, etc. Fabrics are defined as a cloth material made by knitting or weaving or of threads together. Do you know which part of the sheep’s body yields fibres? Some of the examples of synthetic fibres are nylon, polyester (like terylene) and polyacrylic (like Orion). CBSE Worksheets for Class 6 Science Fibre to Fabric Assignment 3; CBSE Worksheets for Class 6 Science Fibre to Fabric Assignment 4; D. Answer the following questions in short: 1. Animal Fibres from sheep, alpaca, camels, rabbits, goats & silk moths. (C) False : Jute is obtained from jute plant (Corchorus). These fibres are usually made up of different kinds of proteins. Answer. In India, cotton is grown in Gujarat, Maharashtra, Andhra Pradesh, Punjab, Haryana, Karnataka, Tamil Nadu, Rajasthan, Orissa and Madhya Pradesh. Wool. What are Fibres and Fabrics? If we perform the burning test, then natural silk fibre burns giving a smell of burning hair while artificial fibre burns giving a smell of burning paper. SILK . For example, polyester, nylon, and acrylic, etc. Another animal fibre you all are familiar with is silk. Solving the Fibre to Fabric Multiple Choice Questions of Class 7 Science Chapter 3 MCQ can be of extreme help as you will be aware of all the concepts. These fibres are obtained from different animal sources. The largest number of breeds in one country is in Britain, with around 65. For example, polyester, nylon, and acrylic etc. e) Weaving of yarn makes a piece of fabric. 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